package com.lsl.facade_pattern.example;

/**
 * description:
 *
 * @author: liushengli
 * data: 2022/11/30
 */
//立体声
public class Stereo {
    private Stereo() {
    }
    private static Stereo stereo = new Stereo();

    public static Stereo getInstance(){
        return stereo;
    }

    public void on(){
        System.out.println("...Stereo on...");

    }
    public void off(){
        System.out.println("...Stereo off...");

    }
    public void up(){
        System.out.println("...Stereo up...");

    }
}